HTTPWEBREQUEST 操作超时很费解

mcxiaoabc 2013-04-21 12:53:22

 我在模拟请求[POST]一个网站的时候，一直连接不上去，总是提示我”操作超时“

  HttpWebRequest httpWebRequest = null;

            HttpWebResponse httpWebResponse = null;

            try

            {

                byte[] byteRequest = Encoding.Default.GetBytes(postData);//格式化POST数据



                httpWebRequest = (HttpWebRequest)HttpWebRequest.Create(url);//发送请求

               // httpWebRequest.CookieContainer = cookieContainer;//填充COOKIE

                //httpWebRequest.ContentType = "application/x-www-form-urlencoded";

                //httpWebRequest.ServicePoint.ConnectionLimit = maxTry;

               ;

                //httpWebRequest.Headers.Add("Accept-Language", "ko,zh-cn;q=0.5");

                //httpWebRequest.Headers.Add("Accept-Encoding", "gzip, deflate");



               // httpWebRequest.Referer = "";



                //httpWebRequest.Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";

                //httpWebRequest.UserAgent = "Mozilla/5.0 (Windows NT 6.1; rv:20.0) Gecko/20100101 Firefox/20.0";

                httpWebRequest.Method = isPost ? "POST" : "GET";//那种请求？

                httpWebRequest.ContentLength = byteRequest.Length;//获取数据包大小



                Stream stream = httpWebRequest.GetRequestStream();//获取流对象

                stream.Write(byteRequest, 0, byteRequest.Length);

                stream.Close();



                httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();

                //定义数据响应信息

                Stream responseStream = httpWebResponse.GetResponseStream();//获取服务端回发达留信息



                StreamReader streamReader = new StreamReader(responseStream, encoding);



                string html = streamReader.ReadToEnd();

                streamReader.Close();

                responseStream.Close();

                currentTry = 0;



                httpWebRequest.Abort();

                httpWebResponse.Close();



                return html;//获取 

            }

            catch (System.Net.WebException e)

            {

Stream stream = httpWebRequest.GetRequestStream();/这句就出问题了
代码片段。HEAD头没问题，我用第三方 POSET模拟软件（HTTPAnalyzerFullV自带）提交的时候HEDA头什么也不设置值提交返回正常（也就是说提交的时候只有一个POST地址。和一个HOST主机属性，）而我用HTTPWEBREQUEST却怎么也访问不了
我抓POST模拟器（HTTPAnalyzerFullV自带）返回的包的时候发现返回头信息有

Expires -1 这个标识难道跟这个有关系？如果有关系HTTPWEQUEREST 应该怎么设置。呢

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niuxia127 2015-11-03

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请问解决了吗

mcxiaoabc 2013-04-22

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顶顶，大神前来解决

mcxiaoabc 2013-04-21

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引用 2 楼 sp1234 的回复:

“抓包”时到底看到返回了什么呢？

老大还在不

mcxiaoabc 2013-04-21

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我用模拟软件提交的数据请求头


POST /signin HTTP/1.1
Host:sign.XXX.net
Content-Length:296

下面是返回的数据


HTTP/1.1 200 OK
Cache-Control: no-store,private
Pragma: no-cache
Content-Length: 12761
Content-Type: text/html
Expires: Sun, 21 Apr 2013 12:40:42 GMT
Server: Microsoft-IIS/7.0
Set-Cookie: NSCHK=f; domain=xxx.net; path=/
Set-Cookie: NSERR=; expires=Mon, 31-Dec-1979 15:00:00 GMT; domain=xxxx.net; path=/
P3P: CP='CAO PSA CONi OTR OUR DEM ONL'
X-UA-Compatible: IE=EmulateIE8
X-Powered-By: ASP.NET
Date: Sun, 21 Apr 2013 12:41:41 GMT

我用别的软件模拟都能正常返回哈，HTTPWEBREQUEST 就一直提示操作超时我请求头什么也没设置